/*
 * Copyright (c) 2008-20018 Saša Stamenković <umpirsky@gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 *    * Redistributions of source code must retain the above copyright notice,
 *      this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright notice,
 *    	this list of conditions and the following disclaimer in the documentation
 *    	and/or other materials provided with the distribution.
 *    * Neither the name of the <ORGANIZATION> nor the names of its contributors
 *    	may be used to endorse or promote products derived from this software without
 *    	specific prior written permission.
 *
 *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *    IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 *    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 *    OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 *    WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package umpirsky;

import java.util.Observable;

import umpirsky.UmpirskyRequestEntity.ProgressListener;

/**
 * @author Saša Stamenković <umpirsky@gmail.com>
 *
 */
public class UmpirskyProgressListener extends Observable implements ProgressListener {
	/**
	 * Number of bytes to send
	 */
	private long bytesToSend;

	/**
	 * Progress constructor
	 *
	 * @param observer applet is observer. monitors upload progress
	 * @param bytesToSend number of bytes that need to be sent
	 */
	public UmpirskyProgressListener(UmpirskyUploader observer, long bytesToSend) {
		// for some reson, twice much bytes is sent to server, so this is ugly patch
		this.bytesToSend = 2 * bytesToSend;
		this.addObserver(observer);
	}

	/**
	 * Triggered on every byte sent
	 *
	 * @param bytes number of bytes sent
	 */
	public void transferred(long bytes) {
		this.setChanged();
		this.notifyObservers((float) bytes/this.bytesToSend * 100);
	}

}
